Etelvina Hernandez, 24, of Rio Grande City, and Juan De Dios Cavazos, 46, of Donna, died in separate crashes Sunday morning, according to a release from the Texas Department of Public Safety. Hernandez, who was driving a GMC pickup truck, died at the scene of a crash just before 7 a.m. Sunday on Embassy Road south of Farm-to-Market 755 in Rio Grande City, the release states.